Home / 2,988.56-4,121.88-2,547.92

Finding the Fourth Proportional to 2,988.56, 4,121.88 and 2,547.92

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Solution

The fourth proportional to 2,988.56, 4,121.88 and 2,547.92 is: 3,514.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.56 : 4,121.88 = 2,547.92 : x
  2. Step 2: Convert to fraction form
    2,988.56/4,121.88 = 2,547.92/x
  3. Step 3: Cross multiply
    2,988.56x = 4,121.88 × 2,547.92
  4. Step 4: Simplify right side
    2,988.56x = 10,502,220.49
  5. Step 5: Solve for x
    x = 10,502,220.49/2,988.56
  6. Step 6: Final answer
    x = 3,514.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.